完成下面类中成员函数的定义。#include &#91;iostream&#93; #include &#91;string&#93; using namespace std; class str {private: char *st; public: str(char *a) {set(a); } str & operator=(str &a) {delete st; set(a.st); return *this; } void show(){cout<<st<<endl;} ~str(){delete st;} void set(char *s)//初始化st {_____ strcpy(st,s); } }; void main() {str s1("he"),s2("she"); s1.show(),s2.show(); s2=s1; s1.show(),s2.show();}

f(st): st[]=st={:,:} f(st) (st[],st[]) 结果是

传统光纤连接器有（）？ A: A．ST、SC、FC B: B．ST、SC、LC C: C．ST、LC、MU D: D．LC、MU、MT-RJ

f(st):<p style="padding-left: 50px;"> st[]=st={:,:}f(st)(st[],st[])结果是

def f(st): st.append('x') return st st=['a'] st=f(st) print(st) 结果是

列表st定义为: <br/>st A: st$name B: st[[1]] C: st["name"] D: st[["name"]]

智慧职教: st=[["a","b"],"c"]st[0][1]='d'print(len(st),st)结果是

st='abc234d' st=str(st)&#91;2:-1&#93; print(st) 结果是 A: c234 B: c234d

SQL语句中删除表st的命令是_______ A: DROP TABLE st B: DELETE TABLE st C: DELETE st D: DROP st

经过以下栈的操作后，isEmpty(st)的返回值为（）。initStack(st);push(st,a);push(st,b);pop(st,x);pop(st,y); A: a B: b C: 1 D: 0